Call of Duty: Modern Warfare 2 Hints & Cheats

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GameSpot Walkthroughs

Call of Duty: Modern Warfare 2 Walkthrough
Stay frosty with our step-by-step walkthrough for Call of Duty: Modern Warfare 2.
- Go to Online Walkthrough »

Modern Warfare 2 Unlockables

Achievements

Complete each achievement to receive the allotted gamerscore.

How to Unlock	Unlockable
Help train the local militia.	Back in the Saddle (15)
Get hand picked for Shepherd's elite squad.	Danger Close (15)
Infiltrate the snowy mountain side base.	Cold Shoulder (15)
Find Rojas in the Favelas.	Tag 'em and bag 'em (15)
Defend Burger Town.	Royale with Cheese (15)
Storm the gulag.	Soap on a Rope (15)
Execute the plan to help the Americans.	Desperate Times (15)
Take back Whiskey Hotel.	Whiskey Hotel (15)
Assault Makarov's safe house.	The Pawn (15)
Complete the mission in the airplane graveyard.	Out of the Frying Pan... (15)
Complete the Single Player campaign on any difficulty.	For the Record (35)
Complete the single player campaign on Hardened or Veteran Difficulty.	The Price of War (90)
Complete 'S.S.D.D' and 'Team Player' on Veteran Difficulty.	First Day of School (25)
Complete 'Cliffhanger' on Veteran Difficulty.	Black Diamond (25)
Complete 'Takedown' and 'The Hornet's Nest' on Veteran Difficulty.	Turistas (25)
Complete 'Wolverines!' and 'Exodus' on Veteran Difficulty.	Red Dawn (25)
Complete 'The Only Easy Day... Was Yesterday' and 'The Gulag' on Veteran Difficulty.	Prisoner #627 (25)
Complete 'Contingency' on Veteran Difficulty	Ends Justify the Means (25)
Complete 'Of Their Own Accord', 'Second Sun', and 'Whiskey Hotel' on Veteran Difficulty.	Homecoming (25)
Complete 'Loose Ends' and 'The Enemy of My Enemy' on Veteran Difficulty.	Queen takes Rook (25)
Complete 'Just Like Old Times' and 'Endgame' on Veteran Difficulty.	Off the Grid (25)
Run The Pit in 'S.S.D.D' and finish with a final time under 30 seconds.	Pit Boss (10)
Plant the C4 in 'Cliffhanger' without alerting or injuring anyone in the blizzard.	Ghost (10)
Kill 7 chickens in under 10 seconds in 'The Hornet's Nest'.	Colonel Sanderson (10)
Earn 1 star in Special Ops.	Gold Star (20)
Earn 4 stars in Special Ops.	Hotel Bravo (20)
Earn 8 stars in Special Ops.	Charlie On Our Six (20)
Earn at least 1 star in 11 different Special Op missions.	It Goes to Eleven (20)
Earn all 3 stars in at least 5 different Special Op missions.	Operational Asset (20)
Earn 21 stars in Special Ops.	Blackjack (20)
Earn at least 1 star in each Special Op mission.	Honor Roll (20)
Earn all 3 stars in at least 10 different Special Op missions.	Operative (30)
Earn 30 stars in Special Ops.	Specialist (30)
Earn all 3 stars in at least 15 different Special Op missions.	Professional (30)
Earn 69 stars in Special Ops.	Star 69 (90)
Kill 4 enemies in a row while downed in Special Ops.	Downed but Not Out (10)
Kill a Juggernaut in Special Ops.	I'm the Juggernaut... (10)
Kill at least 10 enemies with one Predator missile in Single Player or Special Ops.	Ten plus foot-mobiles (10)
Use a riot shield to beat down an enemy in Single Player or Special Ops.	Unnecessary Roughness (10)
Kill 4 enemies with 4 shots during a slow-mo breach in Single Player or Special Ops.	Knock-knock (10)
Kill 6 enemies in a row using a thermal weapon in Single Player or Special Ops.	Some Like it Hot (10)
Kill 2 enemies with a single bullet in Single Player or Special Ops.	Two Birds with One Stone (10)
Collect 22 enemy intel items.	The Road Less Traveled (10)
Collect 45 enemy intel items.	Leave No Stone Unturned (10)
Kill 20 enemies in a row while driving a vehicle in Single Player or Special Ops.	Drive By (10)
Kill 2 rappelling enemies in a row before they land on their feet in Single Player or Special Ops.	The Harder They Fall (10)
Kill 5 enemies in a row using 5 different weapons or attachments in Single Player or Special Ops.	Desperado (10)
Kill 10 enemies in a row using akimbo weapons in Single Player or Special Ops.	Look Ma Two Hands (10)
Knife an enemy without him ever knowing you were there in Single Player or Special Ops.	No Rest For the Wary (10)
Kill at least 3 enemies with a single shot from a grenade launcher in Single Player or Special Ops.	Three-some (10)

Unlock Modern Warfare 2 Museum
The Museum can be selected from the "Mission Select" screen once you've completed the game.
How to Unlock Unlockable
Complete the campaign. An evening with Infinity Ward: Modern Warfare 2 Gallery Exhibit

How to Unlock	Unlockable
Complete the campaign.	An evening with Infinity Ward: Modern Warfare 2 Gallery Exhibit

Killstreak Rewards

You can unlock the Killstreaks by receiving the amount designated before dying.

How to Unlock	Unlockable
03 Kills	UAV (shows enemy location)
04 Kills	Care Package (drops ammo/killstreaks)
04 Kills	Counter UAV (jams enemy radars)
05 Kills	Sentry Gun (deployable gun)
05 Kills	Predator (guided missiles)
06 Kills	Precision Airstrike (drop airstrike)
07 Kills	Harrier Strike (choose bomb location and defending Harrier)
07 Kills	Attack Helicopter
08 Kills	Emergency Airdrop (4 ammo/killstreak drops)
09 Kills	Pave Low (Armored Helicopter)
11 Kills	Chopper Gunner (be the gunner of the Helicopter)
11 Kills	AC130 Gunship (be the gunner of the AC130)
15 Kills	EMP (disables electronics)
25 Kills	Tactical Nuke (kills everyone on map)
09 Kills	Stealth Bomber (undetectable airstrike)
Die 4 times in a row without a kill	Copycat(Steal your killer's class in killcam.)
Die 4 times in a row without a kill	Final Stand(Get back up after being wounded)
Die 4 times in a row without a kill	Martydom(Drop a live grenade just after dying)
Die 3 times in a row without a kill	Painkiller(Big health boost when you spawn)

Professional Perks Unlocks

With each perk you unlock you can upgrade it by completing various requirements with each one.

How to Unlock	Unlockable
Run 26 Miles with Marathon Perk	Marathon Pro (Unlimited Sprint + Climb Obstacles Faster)
Get 120 Kills with Sleight of Hand Perk	Sleight of Hand Pro (Faster Reloading + Faster Aiming)
Resupply 100 times with Scavenger Perk	Scavenger Pro (Resupply from Dead Enemies + Extra Mags)
Get 200 Kills with a Weapon with Two Attachments	Bling Pro (2 Primary Weapon Attachments + 2 Secondary Weapon Attachments)
Get 300 Kills with Stopping Power Perk	Stopping Power Pro (Extra Bullet Damage + Extra Damage to Enemy Vehicles)
Run 30 Miles with Lightweight Perk	Lightweight Pro (Move Faster + Quick Aim after Sprinting)
Get 40 Killstreaks (2 or more in a row without dying) with Hardline Perk	Hardline Pro (Killstreak Rewards require 1 less Kill + Deathstreak Rewards require 1 less Death)
Destroy 40 enemy Killstreak Rewards with Cold-Blooded Perk	Cold-Blooded Pro (Undetectable by UAV, air support, sentries, and thermal imaging + No Red Crosshair or Name when you are Targeted)
Get 100 Kills with Explosives while using Danger Close Perk	Danger Close Pro (Increased Explosive Weapon Damage + Extra Air Support Damage)
Get 20 Melee Kills using Commando Perk	Commando Pro (Increased Melee Distance + No Falling Damage)
Get 80 Hip Fire Kills using Steady Aim	Steady Aim Pro (Increased Hip Fire Accuracy + Longer Hold Breath Duration)
Get 50 Close Range Kills using Scrambler Perk	Scrambler Pro (Jam Enemy Radar Near you + Delay Enemy Claymore Explosions)
Get 50 Close Range Kills using Ninja Perk	Ninja Pro (Invisible to Heartbeat Sensors + Your footsteps are Silent)
Destroy 120 Detected Explosives or Tactical Insertions with Sitrep Perk	Sitrep Pro (Detect Enemy Explosives and Tactical Insertions + Louder Enemy Footsteps)
Get 120 Kills using One Man Army	One Man Army Pro (Swap Classes at Any Time + Swap Classes Faster)
Get 20 Kills while in Last Stand	Last Stand Pro (Pull Out your Pistol before Dying + Use Equipment in Last Stand)

Unlockable Multiplayer Weapons and Equipment

Reach the Level indicated to unlock each Weapon and/or Equipment

How to Unlock	Unlockable
Level 01	FAMAS (Assault Rifle)
Level 01	UMP .45 (SMG)
Level 01	L86 LSW (LMG)
Level 01	SPAS-12 (Shotgun)
Level 01	Intervention (Sniper Rifle)
Level 01	USP .45 (Pistol)
Level 01	AT4-HS (Grenade Launcher)
Level 01	Frag Grenade
Level 01	Semtex Grenade
Level 01	PP-2000 (Secondary)
Level 04	M4A1 (Rifle)
Level 04	MP5K (SMG)
Level 04	RPD (LMG)
Level 04	Barret .50 Cal (Sniper)
Level 07	Throwing Knife
Level 08	SCAR-H (Assault Rifle)
Level 11	Tactical Insertion
Level 12	AA-12 (Shotgun)
Level 12	Vector (SMG)
Level 14	Thumper (Grenade Launcher)
Level 16	MG4 (LMG)
Level 19	Blast Shield
Level 20	TAR-21 (Assault Rifle)
Level 22	Glock 18 (Secondary)
Level 24	P90 (SMG)
Level 26	.44 Magnum (Pistol)
Level 28	FAL (Assault Rifle)
Level 30	Stinger (Grenade Launcher)
Level 31	Claymore
Level 32	AUG HBAR (LMG)
Level 34	Striker (Shotgun)
Level 36	WA2000 (Sniper)
Level 38	M93 Raffica (Secondary)
Level 40	M16A4 (Assault Rifle)
Level 42	Ranger (Shotgun)
Level 43	C4
Level 44	Mini Uzi (SMG)
Level 46	M9 (Pistol)
Level 48	ACR (Assault Rifle)
Level 50	Javelin (Grenade Launcher)
Level 52	M240 (LMG)
Level 54	M1014 (Shotgun)
Level 56	M21 EBR (Sniper Rifle)
Level 58	TMP (Secondary)
Level 60	F2000 (Assault Rifle)
Level 62	Desert Eagle (Pistol)
Level 65	RPG-7 (Grenade Launcher)
Level 67	Winchester 1887 (Shotgun)
Level 70	AK-47 (Assault Rifle)

Extra Custom Class Slot

Obtain level 70 in multiplayer and enter Prestige mode to unlock a sixth custom class slot.

How to Unlock	Unlockable
Obtain level 70 in multiplayer and enter Prestige mode to unlock a sixth custom class slot.	Extra Custom Class Slot
1st Prestige	Extra Custom Class (6 total)
3rd Prestige	Extra Custom Class (7 total)
5th Prestige	Extra Custom Class (8 total)
7th Prestige	Extra Custom Class (9 total)
9th Prestige	Extra Custom Class (10 total)

Walkthroughs & FAQs

Type	Name	File Size
Other	Multiplayer Guide by Master3203	45K
FAQ/Walkthrough	FAQ/Walkthrough by rata1	67K
FAQ/Walkthrough	FAQ/Walkthrough by sokkus	115K
FAQ/Walkthrough	FAQ/Walkthrough by TheGum	60K
FAQ/Walkthrough	FAQ/Walkthrough by vinheim	218K
Other	Throwing Knife FAQ by GamerSanta	10K
Other	One Man Army Perk Guide by PostxMordem	32K
Other	Sniper Guide by jimmythesnowman	154K
Other	Shotgun Guide by xoChrisiskingox	44K
Other	Sniper Guide by ABrookes	15K
Other	Assault Rifle FAQ by link0099	21K
Other	Hardcore Search and Destroy Guide by Musubiman013	53K
Other	Perk Guide by Stevewins123	33K
Other	Multiplayer FAQ by Prance_Stuard	65K
Other	Multiplayer Weapon Guide by go_monkey897	96K
Other	Multiplayer Challenge Guide by x2xlegixt2xcare	32K
Other	Search and Destroy Guide by TripleJump	81K
Other	Spec Ops Guide by aldecide	115K
Achievement Guide	Achievement Guide by ACowWithaDS and HomieG54	36K
Walkthrough	Walkthrough by drgrady	95K
Other	Enemy Intel Location Guide by Absolute Steve	41K
FAQ/Walkthrough	FAQ/Walkthrough by Absolute Steve	91K

Hints & FAQs provided courtesy of GameFAQs.

PC Hints & Cheats

GameSpot Walkthroughs

Call of Duty: Modern Warfare 2 Walkthrough
Stay frosty with our step-by-step walkthrough for Call of Duty: Modern Warfare 2.
- Go to Online Walkthrough »

Modern Warfare 2 Cheat Codes

God mode and more

Locate the file config.cfg (may be called Config_sp.cfg) in your Modern Warfare 2\players folder. Open this file with Notepad. Add the following line to the end of the file: seta thereisacow "1337" Now, you may also add any of the following cheat codes that must be bound to a key.

Cheat	Effect
God	God Mode
Notarget	Enemies Ignore You
Noclip	No Clipping Mode
Give ammo	Give Ammo
bind (KEY) "timescale 0.1"	Set game speed to 10%
bind (KEY) "timescale 0.3"	Set game speed to 30%
bind (KEY) "timescale 0.5"	Set game speed to 50%
bind (KEY) "timescale 1"	Set game speed to Normal (100%) <-DONT FORGET TO ADD THIS!

Modern Warfare 2 Unlockables

Steam Achievements

Complete each requirement to receive the achievements.

How to Unlock	Unlockable
Earn at least 1 star in 11 different Special Op missions.	It Goes to Eleven
Earn all 3 stars in at least 5 different Special Op missions.	Operational Asset
Earn 21 stars in Special Ops.	Blackjack
Earn at least 1 star in each Special Op mission.	Honor Roll
Earn all 3 stars in at least 10 different Special Op missions.	Operative
Earn 30 stars in Special Ops.	Specialist
Earn all 3 stars in at least 15 different Special Op missions.	Professional
Earn 69 stars in Special Ops.	Star 69
Kill 4 enemies in a row while downed in Special Ops.	Downed but Not Out
Kill a Juggernaut in Special Ops.	I'm the Juggernaut...
Kill 5 enemies in a row using 5 different weapons or attachments in Single Player or Special Ops.	Desperado
Complete the single player campaign on Hardened or Veteran Difficulty.	The Price of War
Complete 'S.S.D.D.' and 'Team Player' on Veteran Difficulty.	First Day of School
Complete 'Cliffhanger' on Veteran Difficulty.	Black Diamond
Complete 'Takedown' and 'The Hornet's Nest' on Veteran Difficulty.	Turistas
Complete 'Wolverines!' and 'Exodus' on Veteran Difficulty.	Red Dawn
Complete 'The Only Easy Day... Was Yesterday' and 'The Gulag' on Veteran Difficulty.	Prisoner #627
Complete 'Contingency' on Veteran Difficulty.	Ends Justify the Means
Complete 'Of Their Own Accord', 'Second Sun', and 'Whiskey Hotel' on Veteran Difficulty.	Homecoming
Complete 'Loose Ends' and 'The Enemy of My Enemy' on Veteran Difficulty.	Queen takes Rook
Complete 'Just Like Old Times' and 'Endgame' on Veteran Difficulty.	Off the Grid
Run The Pit in 'S.S.D.D.' and finish with a final time under 30 seconds.	Pit Boss
Kill 4 enemies with 4 shots during a slow-mo breach in Single Player or Special Ops.	Knock-knock
Kill 20 enemies in a row while driving a vehicle in Single Player or Special Ops.	Drive By
Collect 45 enemy intel items.	Leave No Stone Unturned
Collect 22 enemy intel items.	The Road Less Traveled
Earn 8 stars in Special Ops.	Charlie On Our Six
Execute the plan to help the Americans.	Desperate Times
Storm the gulag.	Soap on a Rope
Take back Whiskey Hotel.	Whiskey Hotel
Assault Makarov's safe house.	The Pawn
Complete the mission in the airplane graveyard.	Out of the Frying Pan...
Complete the Single Player campaign on any difficulty.	For the Record
Plant the C4 in 'Cliffhanger' without alerting or injuring anyone in the blizzard.	Ghost
Kill 7 chickens in under 10 seconds in 'The Hornet's Nest'.	Colonel Sanderson
Earn 1 star in Special Ops.	Gold Star
Earn 4 stars in Special Ops.	Hotel Bravo
Kill 10 enemies in a row using akimbo weapons in Single Player or Special Ops.	Look Ma Two Hands
Knife an enemy without him ever knowing you were there in Single Player or Special Ops.	No Rest For the Wary
Use a riot shield to beat down an enemy in Single Player or Special Ops.	Unnecessary Roughness
Kill 2 rappelling enemies in a row before they land on their feet in Single Player or Special Ops.	The Harder They Fall
Kill at least 10 enemies with one Predator missile in Single Player or Special Ops.	Ten plus foot-mobiles
Kill 6 enemies in a row using a thermal weapon in Single Player or Special Ops.	Some Like it Hot
Defend Burger Town.	Royale with Cheese
Find Rojas in the Favelas.	Tag 'em and bag 'em
Infiltrate the snowy mountain side base.	Cold Shoulder
Kill 2 enemies with a single bullet in Single Player or Special Ops.	Two Birds with One Stone
Get hand picked for Shepherd's elite squad.	Danger Close
Kill at least 3 enemies with a single shot from a grenade launcher in Single Player or Special Ops.	Three-some
Help train the local militia.	Back in the Saddle

Modern Warfare 2 Museum
The Museum can be accessed by clicking "Mission Select" after you've completed the game, located at the bottom.
How to Unlock Unlockable
Complete the campaign on any difficulty Modern Warfare 2 Gallery

How to Unlock	Unlockable
Complete the campaign on any difficulty	Modern Warfare 2 Gallery

Walkthroughs & FAQs

Type	Name	File Size
Other	Multiplayer Guide by Master3203	45K
FAQ/Walkthrough	FAQ/Walkthrough by rata1	67K
FAQ/Walkthrough	FAQ/Walkthrough by sokkus	115K
FAQ/Walkthrough	FAQ/Walkthrough by TheGum	60K
FAQ/Walkthrough	FAQ/Walkthrough by vinheim	218K
Other	Throwing Knife FAQ by GamerSanta	10K
Other	One Man Army Perk Guide by PostxMordem	32K
Other	Sniper Guide by jimmythesnowman	154K
Other	Shotgun Guide by xoChrisiskingox	44K
Other	Sniper Guide by ABrookes	15K
Other	Assault Rifle FAQ by link0099	21K
Other	Hardcore Search and Destroy Guide by Musubiman013	53K
Other	Perk Guide by Stevewins123	33K
Other	Multiplayer FAQ by Prance_Stuard	65K
Other	Multiplayer Weapon Guide by go_monkey897	96K
Other	Multiplayer Challenge Guide by x2xlegixt2xcare	32K
Other	Search and Destroy Guide by TripleJump	81K
Other	Spec Ops Guide by aldecide	115K
Walkthrough	Walkthrough by drgrady	95K
Other	Enemy Intel Location Guide by Absolute Steve	41K
FAQ/Walkthrough	FAQ/Walkthrough by Absolute Steve	91K

Hints & FAQs provided courtesy of GameFAQs.

PS3 Hints & Cheats

GameSpot Walkthroughs

Call of Duty: Modern Warfare 2 Walkthrough
Stay frosty with our step-by-step walkthrough for Call of Duty: Modern Warfare 2.
- Go to Online Walkthrough »

Modern Warfare 2 Unlockables

Trophies

Complete each requirement to get the specified Trophy. There are 35 Bronze Trophies, 13 Silver Trophies, 2 Gold Trophies, and 1 Platinum Trophy.

How to Unlock	Unlockable
Earn all available Trophies for Modern Warfare® 2.	Is That All You Got? (Platinum)
Help train the local militia.	Back in the Saddle (Bronze)
Get hand picked for Shepherd’s elite squad.	Danger Close (Bronze)
Infiltrate the snowy mountain side base.	Cold Shoulder (Bronze)
Find Rojas in the Favelas.	Tag ‘em and bag ‘em (Bronze)
Defend Burger Town.	Royale with Cheese (Bronze)
Storm the gulag.	Soap on a Rope (Bronze)
Execute the plan to help the Americans.	Desperate Times (Bronze)
Take back Whiskey Hotel.	Whiskey Hotel (Bronze)
Assault Makarov’s safe house.	The Pawn (Bronze)
Complete the mission in the airplane graveyard.	Out of the Frying Pan… (Bronze)
Complete the Single Player campaign on any difficulty.	For the Record (Silver)
Complete the single player campaign on Hardened or Veteran Difficulty.	The Price of War (Gold)
Complete ‘S.S.D.D’ and ‘Team Player’ on Veteran Difficulty.	First Day of School (Silver)
Complete ‘Cliffhanger’ on Veteran Difficulty.	Black Diamond (Silver)
Complete ‘Takedown’ and ‘The Hornet’s Nest’ on Veteran Difficulty.	Turistas (Silver)
Complete ‘Wolverines!’ and ‘Exodus’ on Veteran Difficulty.	Red Dawn (Silver)
Complete ‘The Only Easy Day… Was Yesterday’ and ‘The Gulag’ on Veteran Difficulty.	Prisoner #627 (Silver)
Complete ‘Contingency’ on Veteran Difficulty	Ends Justify the Means (Silver)
Complete ‘Of Their Own Accord’, ‘Second Sun’, and ‘Whiskey Hotel’ on Veteran Difficulty.	Homecoming (Silver)
Complete ‘Loose Ends’ and ‘The Enemy of My Enemy’ on Veteran Difficulty.	Queen takes Rook (Silver)
Complete ‘Just Like Old Times’ and ‘Endgame’ on Veteran Difficulty.	Off the Grid (Silver)
Run The Pit in ‘S.S.D.D’ and finish with a final time under 30 seconds.	Pit Boss (Bronze)
Plant the C4 in ‘Cliffhanger’ without alerting or injuring anyone in the blizzard.	Ghost (Bronze)
Kill 7 chickens in under 10 seconds in ‘The Hornet’s Nest’.	Colonel Sanderson (Bronze)
Earn 1 star in Special Ops.	Gold Star (Bronze)
Earn 4 stars in Special Ops.	Hotel Bravo (Bronze)
Earn 8 stars in Special Ops.	Charlie On Our Six (Bronze)
Earn at least 1 star in 11 different Special Op missions.	It Goes to Eleven (Bronze)
Earn all 3 stars in at least 5 different Special Op missions.	Operational Asset (Bronze)
Earn 21 stars in Special Ops.	Blackjack (Bronze)
Earn at least 1 star in each Special Op mission.	Honor Roll (Bronze)
Earn all 3 stars in at least 10 different Special Op missions.	Operative (Silver)
Earn 30 stars in Special Ops.	Specialist (Silver)
Earn all 3 stars in at least 15 different Special Op missions.	Professional (Silver)
Earn 69 stars in Special Ops.	Star 69 (Gold)
Kill 4 enemies in a row while downed in Special Ops.	Downed but Not Out (Bronze)
Kill a Juggernaut in Special Ops.	I’m the Juggernaut… (Bronze)
Kill at least 10 enemies with one Predator missile in Single Player or Special Ops.	Ten plus foot-mobiles (Bronze)
Use a riot shield to beat down an enemy in Single Player or Special Ops.	Unnecessary Roughness (Bronze)
Kill 4 enemies with 4 shots during a slow-mo breach in Single Player or Special Ops.	Knock-knock (Bronze)
Kill 6 enemies in a row using a thermal weapon in Single Player or Special Ops.	Some Like it Hot (Bronze)
Kill 2 enemies with a single bullet in Single Player or Special Ops.	Two Birds with One Stone (Bronze)
Collect 22 enemy intel items.	The Road Less Traveled (Bronze)
Collect 45 enemy intel items.	Leave No Stone Unturned (Bronze)
Kill 20 enemies in a row while driving a vehicle in Single Player or Special Ops.	Drive By (Bronze)
Kill 2 rappelling enemies in a row before they land on their feet in Single Player or Special Ops.	The Harder They Fall (Bronze)
Kill 5 enemies in a row using 5 different weapons or attachments in Single Player or Special Ops.	Desperado (Bronze)
Kill 10 enemies in a row using akimbo weapons in Single Player or Special Ops.	Look Ma Two Hands (Bronze)
Knife an enemy without him ever knowing you were there in Single Player or Special Ops.	No Rest For the Wary (Bronze)
Kill at least 3 enemies with a single shot from a grenade launcher in Single Player or Special Ops.	Three-some (Bronze)

Unlock Modern Warfare 2 Museum
Museum is selectabe from mission select after Campaign is completed
How to Unlock Unlockable
Complete Campaign Modern Warfare 2 Gallery Exhibition

How to Unlock	Unlockable
Complete Campaign	Modern Warfare 2 Gallery Exhibition

Killstreak Rewards

Unlock certain kill-streak rewards by obtaining a certain amount of kills before dying.

How to Unlock	Unlockable
03 Kills	UAV (Show Enemy Location)
04 Kills	Care Package (drops ammo/Killstreaks)
04 Kills	Counter UAV (scrambles enemy Radar)
05 Kills	Predator Guided missile
05 Kills	Deplyable Sentry Turret
06 Kills	Precision Airstike
07 Kills	Harrier Airstike (choose drop location and defending Harrier)
07 Kills	Attack Helicopter
08 Kills	Emergency Airdrop (Drops ammo/Kilstreaks)
09 Kills	Pave Low (Armed Helicopter)
11 Kills	Helicopter Gunner (be the gunner of a chopper)
11 Kills	AC130 (be the gunner of AC130)
15 Kills	EMP (Disables Electronics)
25 Kills	Nuke Drop (kills everyone on map/ Wins Game)
09 Kills	Stealth Bomber
Die 4 times in a row without a kill	Copycat(Steal your killer's class in killcam.)
Die 4 times in a row without a kill	Final Stand(Get back up after being wounded)
Die 4 times in a row without a kill	Martydom(Drop a live grenade just after dying)
Die 3 times in a row without a kill	Painkiller(Big health boost when you spawn)

Pro Classes and how to unlock them.

How to Unlock	Unlockable
Run 26 miles using Marathon	Marathom Pro (Climb obsticals faster)
120 kills using Sleight of Hand	Sleight of Hand Pro (Faster Aiming)
Resupply 100 times while using Scavanger	Scavanger Pro (Extra Mags)
Get 200 kills using a weapon with 2 attachments	Bling Pro (Two secondary weapon attachments)
Get 120 kills using One Man Army	One Man Army (Swap Classes Faster)
Get 250 kills using Stopping Power	Stopping Power Pro (Increased vehicle damage)
Sprint 30 miles using Lightweight	Lightweight Pro (Quick aim after sprinting)
Get 40 killstreaks while using Hardline	Hardline Pro (Death Streaks require one less death)
Destroy 40 Enemy Killstreak rewards while using cold blooded	Coldblooded Pro (No red crosshair or name when targeted)
Get 100 Kills with explosives while using danger close	Danger Close Pro (Extra air support damage)
Get 20 Melee Kills using Commando	Commando Pro (No fall damage)
Get 80 hip fire kills using Steady Aim	Steady Aim Pro (Longer breath duration for sniper scopes)
Get 50 close range kills using Scrambler	Scrambler Pro (Delay enemy claymore explosions)
Get 50 close range kills using Ninja	Ninja Pro (Foot movement is silent)
Destroy 120 enemy devices using SitRep	SitRep Pro (Louder enemy foot movement)
Get 20 kills while in Last Stand	Last Stand Pro (Use equipment in Last Stand)

Multiplayer Weapons

Unlockable multiplayer weapons are based on your rank you receive. As you gain in rank, you will gain the ability for more and more weapons.

How to Unlock	Unlockable
Rank 04	Assault Rifle (M4A1 Carbine)
Rank 08	Assault Rifle (SCAR-H)
Rank 20	Assault Rifle (TAR-21)
Rank 28	Assault Rifle (FAL)
Rank 40	Assault Rifle (M16A4)
Rank 48	Assault Rifle (ACR)
Rank 60	Assault Rifle (F2000)
Rank 70	Assault Rifle (AK-47)
Rank 04	SMG (MP5K)
Rank 12	SMG (VECTOR)
Rank 24	SMG (P90)
Rank 44	SMG (Mini-Uzi)
Rank 04	LMG (RPD)
Rank 16	LMG (MG4)
Rank 32	LMG (AUG-HBAR)
Rank 52	LMG (M240)
Rank 04	Sniper Rifle (Barret .50 cal)
Rank 36	Sniper Rifle (WA2000)
Rank 56	Sniper Rifle (M21 EBR)
Rank 22	Machine Pistol (G18)
Rank 38	Machine Pistol (M93 Raffica)
Rank 58	Machine Pistol (TMP)
Rank 18	Shotgun (AA-12)
Rank 34	Shotgun (Striker)
Rank 42	Shotgun (Ranger)
Rank 54	Shotgun (M1014)
Rank 67	Shotgun (Model 1887)
Rank 26	Pistol (44. Magnum)
Rank 46	Pistol (M9)
Rank 62	Pistol (Desert Eagle)
Rank 14	Launcher (Thumper)
Rank 30	Launcher (Stinger)
Rank 50	Launcher (Javelin)
Rank 65	Launcher (RPG-7)

Unlock extra Custom Class slots.

How to Unlock	Unlockable
Enter 01st Prestige	Custom Class slot 06
Enter 03rd Prestige	Custom Class slot 07
Enter 05th Prestige	Custom Class slot 08
Enter 07th Prestige	Custom Class slot 09
Enter 09th Prestige	Custom Class slot 10

Walkthroughs & FAQs

Type	Name	File Size
Other	Multiplayer Guide by Master3203	45K
FAQ/Walkthrough	FAQ/Walkthrough by rata1	67K
FAQ/Walkthrough	FAQ/Walkthrough by sokkus	115K
FAQ/Walkthrough	FAQ/Walkthrough by TheGum	60K
FAQ/Walkthrough	FAQ/Walkthrough by vinheim	218K
Other	Throwing Knife FAQ by GamerSanta	10K
Other	One Man Army Perk Guide by PostxMordem	32K
Other	Sniper Guide by jimmythesnowman	154K
Other	Shotgun Guide by xoChrisiskingox	44K
Other	Sniper Guide by ABrookes	15K
Other	Assault Rifle FAQ by link0099	21K
Other	Hardcore Search and Destroy Guide by Musubiman013	53K
Other	Perk Guide by Stevewins123	33K
Other	Multiplayer FAQ by Prance_Stuard	65K
Other	Multiplayer Weapon Guide by go_monkey897	96K
Other	Multiplayer Challenge Guide by x2xlegixt2xcare	32K
Other	Search and Destroy Guide by TripleJump	81K
Other	Spec Ops Guide by aldecide	115K
Achievement Guide	Achievement Guide by ACowWithaDS and HomieG54	36K
Walkthrough	Walkthrough by drgrady	95K
Other	Enemy Intel Location Guide by Absolute Steve	41K
FAQ/Walkthrough	FAQ/Walkthrough by Absolute Steve	91K